For example, on the graph of a tile pattern the y-intercept represents the number of tiles in Figure 0. We sometimes report the y-intercept of a graph with a coordinate pair, but since the x-coordinate is always zero, we often just give the y-coordinate of the y-intercept. For example, we might say that the y-intercept of the graph at right is (0, 2), or we might just say that the y-intercept is 2. When a linear equation is written in y = mx + b form, b tells us the y-intercept of the graph. For example, the equation of the graph below is y = x + 2 and its y-intercept is 2.